US5698614A - Fluorescent ink composition for use in marking pens - Google Patents
Fluorescent ink composition for use in marking pens Download PDFInfo
- Publication number
- US5698614A US5698614A US08/478,598 US47859895A US5698614A US 5698614 A US5698614 A US 5698614A US 47859895 A US47859895 A US 47859895A US 5698614 A US5698614 A US 5698614A
- Authority
- US
- United States
- Prior art keywords
- ink composition
- fluorescent
- amount
- pigment
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/50—Sympathetic, colour changing or similar inks
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/16—Writing inks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S260/00—Chemistry of carbon compounds
- Y10S260/38—Ink
Definitions
- This invention relates to a fluorescent ink composition for use in marking pen, more particularly to an oil base fluorescent ink composition which is substantially nontoxic, clear in color, of high fluorescent strength and of good storability.
- the invention further relates to a marking pen which contains the above mentioned oil base fluorescent ink composition.
- the conventional ink composition for use in a marking pen contains an organic solvent such as methyl cellosolve or ethyl cellosolve. These organic solvents are relatively low in toxicity, however, they might be still injurious to the health.
- organic solvents are relatively low in toxicity, however, they might be still injurious to the health.
- a variety of fluorescent ink compositions are already known.
- a fluorescent ink composition which employs a fluorescent dye as a fluorescent colorant dissolved in a solvent is suitable for use in a marking pen, but it is not clear in color.
- a fluorescent ink composition which employs a dispersion type fluorescent pigment as a fluorescent colorant provides writings which are blurred or uneven in fluorescent strength On account of sedimentation of the pigment in the ink composition.
- the ink composition has naturally bad storability and is far from suitable for use in a marking pen.
- the invention provides an oil base fluorescent ink composition which comprises:
- the ink composition of the invention is particularly suitable for use in a writing instrument called a marking pen which has an ink reservoir composed of a porous body such as felt or a bundle of fibers, impregnated with an ink composition within a hollow holder and a porous pen tip composed of a porous material such as felt, fiber or resin to which the ink composition is supplied from the reservoir by making use of capillary phenomenon, thereby permitting to write.
- a marking pen which has an ink reservoir composed of a porous body such as felt or a bundle of fibers, impregnated with an ink composition within a hollow holder and a porous pen tip composed of a porous material such as felt, fiber or resin to which the ink composition is supplied from the reservoir by making use of capillary phenomenon, thereby permitting to write.
- the invention further provides a marking pen for writing which comprises an ink reservoir composed of a porous body which is impregnated with such an oil ink composition as above mentioned.
- the ink composition is homogeneous so that it does not clog the reservoir or the pen tip, and the marking pen writes well over a long period of time.
- the ink composition contains an organic solvent which is mainly composed of propylene glycol monomethyl ether, and it is preferred that the solvent is composed of 80-100% by weight of propylene glycol monomethyl ether and, optionally together with 20-0% by weight of at least one member selected from the group consisting of a lower aliphatic alcohol of 1 to 3 carbons and dipropylene glycol monomethyl ether.
- the lower aliphatic alcohol includes, for example, methanol, ethanol, n-propanol, i-propanol, or a mixture of two or more of these. According to the invention the use of such a solvent as above mentioned permits complete dissolution of the fluorescent pigment used in the solvent, so that the resultant ink composition is substantially nontoxic and forms writings with desired darkness.
- the ink composition contains the solvent usually in an amount of 45-95% by weight, preferably 65-90% by weight, although not limited thereto.
- the use of solvent in excess results in writings short of darkness, whereas the use of solvent in amounts too small the resultant ink composition has too high a viscosity and writes bad.
- the ink composition contains a solution type fluorescent pigment.
- the fluorescent pigment is called an organic fluorescent pigment or a daylight fluorescent pigment, and as well known, it is such a pigment that has fluorescent or brilliant color when it receives daylight or the like.
- the fluorescent pigment is usually available as a powder composed of a transparent synthetic resin matrix having a fluorescent dye dissolved therein together with a ultraviolet rays absorbent.
- the synthetic resin serves as a matrix or carrier material for the fluorescent dye to form a solid solution ("Coloring Material", Vol. 58 2!,pp. 73-79 (1985)).
- the fluorescent pigment as above mentioned is called a synthetic resin solid solution type fluorescent pigment.
- this type of fluorescent pigment is produced, for example, by dissolving a fluorescent dye together with a ultraviolet rays absorbent in a transparent synthetic resin and then the resultant mass of colored resin is crushed and powdered. A fluorescent dye and a ultraviolet rays absorbent may be dissolved when the resin is produced.
- the synthetic resin solid solution type fluorescent pigment may also be produced by making use of emulsion polymerization when a resin is produced.
- the synthetic resin solid solution type fluorescent pigment is divided into a solution type and a dispersion type.
- the dispersion type fluorescent pigment is usually a powder insoluble in an organic solvent so that it is dispersed in an organic solvent when it is used.
- the solution type fluorescent pigment is usually soluble in an organic solvent so that it is dissolved in an organic solvent when it is used.
- the resultant fluorescent pigment is the dispersion type.
- the resultant fluorescent pigment is the solution type.
- the invention uses the solution type fluorescent pigment, and hence the ink composition of the invention is a homogeneous solution.
- the solution type fluorescent pigment used in the invention is not limited in the method by which it is produced.
- the solution type fluorescent pigment used in the invention is commercially available, among which are, for example, MPI series of Nippon Keiko Kagaku K.K. such as MPI-501, 502, 503, 504, 505, 506, 507, 508, 501C, 503C, 504C, 505C, 506C, 507C or 508C: FM-10 and FM-100 series of Sinloich Co., Ltd. such as FM-11, 12, 13, 14, 15, 16, 17, 18, 25, 27, 103, 104, 105, 106, 107 or 108; Flare 410 series of Sterling Industrial Colours Ltd. such as 41031 Yellow, 41035 Rose, 41037 Magenta, 41022 Brightener or 41022N Brightener.
- the solution type fluorescent pigment may be used singly or as a mixture.
- the ink composition of the invention contains the solution type fluorescent pigment in an amount of 0.5-30%, preferably 5-20% by weight, based on the ink composition.
- the resultant ink composition has too a high viscosity, and bedsides a marking pen containing the ink composition is clogged at its reservoir or pen tip and writes bad, whereas when the pigment is used in too small an amount, the resultant ink composition writes with insufficient darkness.
- the ink composition of the invention may contain a fluorescent dye or a common oil soluble dye to arrange or control the fluorescent color or strength of the resultant ink composition.
- the ink composition of the invention further contains a ketone resin so that the resultant ink composition has improved storability, leveling effect and water resistance as well as it has good adhesion to a writing surface.
- the ketone resin is a resin which is obtained by condensation of alphatic or aromatic ketones with aldehydes, usually formaldehyde. It is particularly preferred that the ketone resin used is has a viscosity of 2.7-3.5, preferably 2.8-3.4 centipoises at 20° C. as measured with a 10% by weight of solution of the resin in propylene glycol monomethyl ether with an EL viscosimeter.
- the ketone resin such as above mentioned is also commercially available, for example, as Halon 80 (having a viscosity of 2.87 centipoises at 20° as measured with a 10% by weight of solution of the resin in propylene glycol monomethyl ether with an EL viscosime; the same hereafter) or Halon 110H (having a viscosity of 3.29 centipoises) available from Honshu Kagaku Kogyo K.K.; Hilac 110H (having a viscosity of 3.34 centipoises) available from Hitachi Kaset Kogyo K.K.: Ketone resin 90 (having a viscosity of 2.99 centipoises) available from Arakawa Kagaku Kogyo
- the ink composition of the invention contains the ketone resin in an amount of 1-20%, preferably 2-15%, by weight, based on the ink composition.
- the amount of the ketone resin is more than 20% by weight, the resultant ink composition is so viscous that it writes bad, whereas when the amount of the ketone resin is less than 1% by weight, the resultant ink composition has poor adhesion to a writing surface and besides the ink composition is short of water resitance.
- a leveling agent may be incorporated into the ink composition so that it is not repelled or it may be even in darkness when writing on an impervious writing surface.
- a leveling agent there may be preferably used an organic silicone resin such as BYK-300, 310 or 302 available from BYK-Chemie Japan K.K. or ethyl cellulose such as Ethocel available from Dow Chemical Nippon K.K.
- the leveling agent may be contained in an amount of up to 2% by weight based on the ink composition.
- the process for the production of the ink composition of the invention is not limited specifically, however, it is usually produced by dissolving the ketone resin in the solvent under heating and then a fluorescent pigment and other additives are added to the resultant solution followed by stirring to provide a homogeneous ink composition.
- the fluorescent ink composition of the invention contains a solution type fluorescent pigment as a fluorescent pigment, a ketone resin as a resin component, and propylene glycol monomethyl ether in an amount of at least 80% by weight of the solvent, each specifically, and hence the fluorescent ink composition of the invention is substantially nontoxic and has clear and high strength fluorescent colors as well as improved storability.
- the ink composition contains no pigment particles, but it is homogeneous, and thus it is particularly suitable for use in a marking pen for writing as hereinbefore mentioned.
- the ink composition was charged in Sakura Marker 367, a marking pen for writing which has an ink reservoir composed of a porous body and a porous pen tip as mentioned hereinbefore available from Sakura Color Products Corp. and the fluorescent color strength, storability and changeability in color were measured. The results are shown in Table 1.
- the fluorescent color strength was measured by handwriting on paper according to JIS P 3201 and the resultant writing was examined if it had clear and strong fluorescent color.
- the storability was measured by handwriting on paper according to JIS P 3201 after standing the marking pen at 50° C. for one month and the resultant writing was examined if the writing was sufficient and even in darkness sufficient and even in darkness; C: faint and uneven in darkness.
- the changeability in color was measured by handwriting on paper according to JIS P 3201 and the color of the resultant writing was compared with the color of a solution of the fluorescent pigment or dye.
- the ink composition of the invention has clear fluorescent color of high strength, improved storability and suffers from no change in color when writing.
- the ink composition of reference Example 1 uses a dispersion type fluorescent pigment so that it is particularly poor in storability
- the ink composition of Reference Example 2 uses a fluorescent dye so that the resultant writing suffers from color in change as well as it is weak in fluorescent color strength.
- the ink composition of Reference Example 3 uses an alkylphenol resin in place of ketone resin as the sole resin component and thus it provides no fluorescent writings, and moreover the writing changes remarkably in color.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12755394A JP3304612B2 (ja) | 1994-06-09 | 1994-06-09 | 筆記具用蛍光色インキ組成物 |
JP6-127553 | 1994-06-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
US5698614A true US5698614A (en) | 1997-12-16 |
Family
ID=14962864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/478,598 Expired - Lifetime US5698614A (en) | 1994-06-09 | 1995-06-07 | Fluorescent ink composition for use in marking pens |
Country Status (4)
Country | Link |
---|---|
US (1) | US5698614A (fr) |
EP (1) | EP0691387B1 (fr) |
JP (1) | JP3304612B2 (fr) |
DE (1) | DE69506954T2 (fr) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6214915B1 (en) * | 1998-12-10 | 2001-04-10 | General Electric Company | Stabilized thermoplastic compositions |
WO2002016515A1 (fr) * | 2000-08-24 | 2002-02-28 | Bic Corporation | Encres fluorescentes a base de solvant destinees a des instruments d'ecriture fondees sur des dispersions de pigments dans des solvants non aqueux |
US20020086163A1 (en) * | 2000-11-07 | 2002-07-04 | Kunio Shimizu | Protective film of a polarizing plate |
US20020160172A1 (en) * | 2000-11-07 | 2002-10-31 | Kunio Shimizu | Protective film of a polarizing plate |
US6517619B1 (en) * | 2000-08-24 | 2003-02-11 | Bic Corporation | Fluorescent inks for writing instruments using fluorescent dyes and white pigments |
US6566138B1 (en) * | 1998-10-26 | 2003-05-20 | The United States Of America As Represented By The Secretary Of The Army | Chemical agent simulant training composition |
US20050017217A1 (en) * | 2003-07-21 | 2005-01-27 | Lg Electronics Inc. | Method for making phosphor ink and system using the same |
US20090057622A1 (en) * | 2007-08-31 | 2009-03-05 | Clean Earth Technologies, Llc | Simulant of Radiological Contamination |
US20090062386A1 (en) * | 2007-08-30 | 2009-03-05 | Clean Earth Technologies, Llc | Simulants of Toxants for Training and Testing |
CN105385240A (zh) * | 2015-12-28 | 2016-03-09 | 王丽萍 | 一种防伪荧光油墨 |
CN107586487A (zh) * | 2016-12-12 | 2018-01-16 | 广东轻工职业技术学院 | 一种防伪印油及其制备方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001240788A (ja) * | 2000-02-29 | 2001-09-04 | Shachihata Inc | マーキングペン用油性蛍光インキ |
JP2002188027A (ja) * | 2000-12-21 | 2002-07-05 | Shachihata Inc | 紫外線発色性インキ組成物 |
US20030114562A1 (en) * | 2001-06-27 | 2003-06-19 | Pennzoil-Quaker State Company | Tinting composition and method of use |
US6692558B2 (en) * | 2001-09-21 | 2004-02-17 | Illinois Tool Works, Inc. | Fluorescent marking stain and pen |
JP6006060B2 (ja) * | 2012-02-21 | 2016-10-12 | 株式会社Okiデータ・インフォテック | インクジェット記録用インク、インクカートリッジ、インクジェット記録用インクの製造方法、インクカートリッジの製造方法、記録方法 |
JP5987240B2 (ja) * | 2012-08-29 | 2016-09-07 | ゼネラル株式会社 | 非水性インクジェットインクとその製造方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4150997A (en) * | 1978-04-24 | 1979-04-24 | Recognition Equipment Incorporated | Water base fluorescent ink for ink jet printing |
JPS5523145A (en) * | 1978-08-07 | 1980-02-19 | Tonbo Enpitsu:Kk | Fluorescent ball point ink composition |
US4242139A (en) * | 1978-02-03 | 1980-12-30 | Hoechst Aktiengesellschaft | Water soluble benzoxanthene dyestuffs for fluorescent inks |
JPS62129369A (ja) * | 1985-11-29 | 1987-06-11 | Pentel Kk | 油性インキ |
JPH04139273A (ja) * | 1990-09-29 | 1992-05-13 | Pentel Kk | 油性インキ |
US5135569A (en) * | 1990-08-24 | 1992-08-04 | W. R. Grace & Co.-Conn. | Ink composition containing fluorescent component and method of tagging articles therewith |
US5156675A (en) * | 1991-05-16 | 1992-10-20 | Xerox Corporation | Ink for ink jet printing |
JPH05148443A (ja) * | 1991-11-26 | 1993-06-15 | Mitsubishi Pencil Co Ltd | 顔料インキ組成物 |
US5256192A (en) * | 1992-05-15 | 1993-10-26 | Dataproducts Corporation | Solvent based fluorescent ink compositions for ink jet printing |
-
1994
- 1994-06-09 JP JP12755394A patent/JP3304612B2/ja not_active Expired - Fee Related
-
1995
- 1995-06-07 US US08/478,598 patent/US5698614A/en not_active Expired - Lifetime
- 1995-06-08 DE DE1995606954 patent/DE69506954T2/de not_active Expired - Fee Related
- 1995-06-08 EP EP19950108827 patent/EP0691387B1/fr not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4242139A (en) * | 1978-02-03 | 1980-12-30 | Hoechst Aktiengesellschaft | Water soluble benzoxanthene dyestuffs for fluorescent inks |
US4150997A (en) * | 1978-04-24 | 1979-04-24 | Recognition Equipment Incorporated | Water base fluorescent ink for ink jet printing |
JPS5523145A (en) * | 1978-08-07 | 1980-02-19 | Tonbo Enpitsu:Kk | Fluorescent ball point ink composition |
JPS62129369A (ja) * | 1985-11-29 | 1987-06-11 | Pentel Kk | 油性インキ |
US5135569A (en) * | 1990-08-24 | 1992-08-04 | W. R. Grace & Co.-Conn. | Ink composition containing fluorescent component and method of tagging articles therewith |
JPH04139273A (ja) * | 1990-09-29 | 1992-05-13 | Pentel Kk | 油性インキ |
US5156675A (en) * | 1991-05-16 | 1992-10-20 | Xerox Corporation | Ink for ink jet printing |
JPH05148443A (ja) * | 1991-11-26 | 1993-06-15 | Mitsubishi Pencil Co Ltd | 顔料インキ組成物 |
US5256192A (en) * | 1992-05-15 | 1993-10-26 | Dataproducts Corporation | Solvent based fluorescent ink compositions for ink jet printing |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6566138B1 (en) * | 1998-10-26 | 2003-05-20 | The United States Of America As Represented By The Secretary Of The Army | Chemical agent simulant training composition |
US6214915B1 (en) * | 1998-12-10 | 2001-04-10 | General Electric Company | Stabilized thermoplastic compositions |
US6425948B1 (en) | 2000-08-24 | 2002-07-30 | Bic Corporation | Solvent-based fluorescent inks for writing instruments based upon pigment dispersions in non-aqueous solvents |
US6517619B1 (en) * | 2000-08-24 | 2003-02-11 | Bic Corporation | Fluorescent inks for writing instruments using fluorescent dyes and white pigments |
WO2002016515A1 (fr) * | 2000-08-24 | 2002-02-28 | Bic Corporation | Encres fluorescentes a base de solvant destinees a des instruments d'ecriture fondees sur des dispersions de pigments dans des solvants non aqueux |
US20020086163A1 (en) * | 2000-11-07 | 2002-07-04 | Kunio Shimizu | Protective film of a polarizing plate |
US20020160172A1 (en) * | 2000-11-07 | 2002-10-31 | Kunio Shimizu | Protective film of a polarizing plate |
US7125918B2 (en) * | 2000-11-07 | 2006-10-24 | Konica Corporation | Protective film of a polarizing plate |
US20050017217A1 (en) * | 2003-07-21 | 2005-01-27 | Lg Electronics Inc. | Method for making phosphor ink and system using the same |
US7018564B2 (en) | 2003-07-21 | 2006-03-28 | Lg Electronics Inc. | Method for making phosphor ink and system using the same |
US20090062386A1 (en) * | 2007-08-30 | 2009-03-05 | Clean Earth Technologies, Llc | Simulants of Toxants for Training and Testing |
US20090057622A1 (en) * | 2007-08-31 | 2009-03-05 | Clean Earth Technologies, Llc | Simulant of Radiological Contamination |
CN105385240A (zh) * | 2015-12-28 | 2016-03-09 | 王丽萍 | 一种防伪荧光油墨 |
CN107586487A (zh) * | 2016-12-12 | 2018-01-16 | 广东轻工职业技术学院 | 一种防伪印油及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
EP0691387A3 (fr) | 1996-11-20 |
DE69506954T2 (de) | 1999-07-29 |
EP0691387B1 (fr) | 1998-12-30 |
JPH07331155A (ja) | 1995-12-19 |
JP3304612B2 (ja) | 2002-07-22 |
DE69506954D1 (de) | 1999-02-11 |
EP0691387A2 (fr) | 1996-01-10 |
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Legal Events
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AS | Assignment |
Owner name: SAKURA COLOR PRODUCTS CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:UEDA, HIROAKI;YOKOI, MASAKAZU;OKUDA, YASUSHI;REEL/FRAME:007717/0205 Effective date: 19950821 |
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